Fine Tectonic Interpretation And Seismic Reservoir Prediction Of Zhuang 62-66 Block Of Wuhaozhuang Oil Field

Zhuang62-66 block of Wuhaozhuang oilfield is a typical structural-lithological composite fault block oil reservoir, currently in the progressive exploration and development stage, and facing the oil-water relationship contradiction problem. Current geological knowledge cannot meet the requirements of exploration and development deployment anymore. This paper commenced under the guidance of petroleum geology theory and carried out research of fine tectonic interpretation and seismic reservoir prediction using the latest 3D seismic data and logging data, finally established a set of systematic fine tectonic interpretation method and seismic description technology regarding turbidite fan, fan delta and shore shallow lake dam for the study area.With the lasted 3D seismic data, well drilling data and well logging data, the fine tectonic interpretation work was carried out mainly under the guidance of comb fracture system mode and technologies such as structure oriented filtering, strata-fault forward modeling, spectral decomposition, multi-attributes fault identification and variable velocity mapping. The interpretation result revealed the top of middle and lower sub-member of the third member and the second member the of Shahejie formation.Based on the fine tectonic interpretation, the technologies of seismic attributes analysis and post stack seismic inversion were applied to predict reservoir characteristics. Technologies of time-frequency analysis, seismic faces analysis and thickness based paleogeomorphology analysis were applied to describe the ancient water feature, provenance feature and stratigraphic features. Besides, technologies of multi-attributes principle component analysis, strata slicing and spectral decomposition were separately aimed at describing the sedimentary characteristics of turbidite fan, fan delta and shore shallow lake dam, and revealed the reservoir deposition and distribution by logging calibration. In the last, fine post-stake seismic inversion was carried out aimed at the first oil reservoir, the main oil reservoir of lower third member of the Shahejie formation. In order to reveal the internal structure of turbidite fan deposition, geo-statistical inversion was applied and sand distribution of the five turbidite fan was distinguished.